linux/drivers/staging/rts5208/sd.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Driver for Realtek PCI-Express card reader
 *
 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
 *
 * Author:
 *   Wei WANG ([email protected])
 *   Micky Ching ([email protected])
 */

#include <linux/blkdev.h>
#include <linux/kthread.h>
#include <linux/sched.h>

#include "rtsx.h"
#include "sd.h"

#define SD_MAX_RETRY_COUNT …

static u16 REG_SD_CFG1;
static u16 REG_SD_CFG2;
static u16 REG_SD_CFG3;
static u16 REG_SD_STAT1;
static u16 REG_SD_STAT2;
static u16 REG_SD_BUS_STAT;
static u16 REG_SD_PAD_CTL;
static u16 REG_SD_SAMPLE_POINT_CTL;
static u16 REG_SD_PUSH_POINT_CTL;
static u16 REG_SD_CMD0;
static u16 REG_SD_CMD1;
static u16 REG_SD_CMD2;
static u16 REG_SD_CMD3;
static u16 REG_SD_CMD4;
static u16 REG_SD_CMD5;
static u16 REG_SD_BYTE_CNT_L;
static u16 REG_SD_BYTE_CNT_H;
static u16 REG_SD_BLOCK_CNT_L;
static u16 REG_SD_BLOCK_CNT_H;
static u16 REG_SD_TRANSFER;
static u16 REG_SD_VPCLK0_CTL;
static u16 REG_SD_VPCLK1_CTL;
static u16 REG_SD_DCMPS0_CTL;
static u16 REG_SD_DCMPS1_CTL;

static inline void sd_set_err_code(struct rtsx_chip *chip, u8 err_code)
{ … }

static inline void sd_clr_err_code(struct rtsx_chip *chip)
{ … }

static inline int sd_check_err_code(struct rtsx_chip *chip, u8 err_code)
{ … }

static void sd_init_reg_addr(struct rtsx_chip *chip)
{ … }

static int sd_check_data0_status(struct rtsx_chip *chip)
{ … }

static int sd_send_cmd_get_rsp(struct rtsx_chip *chip, u8 cmd_idx,
			       u32 arg, u8 rsp_type, u8 *rsp, int rsp_len)
{ … }

static int sd_read_data(struct rtsx_chip *chip,
			u8 trans_mode, u8 *cmd, int cmd_len, u16 byte_cnt,
			u16 blk_cnt, u8 bus_width, u8 *buf, int buf_len,
			int timeout)
{ … }

static int sd_write_data(struct rtsx_chip *chip, u8 trans_mode,
			 u8 *cmd, int cmd_len, u16 byte_cnt, u16 blk_cnt,
			 u8 bus_width, u8 *buf, int buf_len, int timeout)
{ … }

static int sd_check_csd(struct rtsx_chip *chip, char check_wp)
{ … }

static int sd_set_sample_push_timing(struct rtsx_chip *chip)
{ … }

static void sd_choose_proper_clock(struct rtsx_chip *chip)
{ … }

static int sd_set_clock_divider(struct rtsx_chip *chip, u8 clk_div)
{ … }

static int sd_set_init_para(struct rtsx_chip *chip)
{ … }

int sd_select_card(struct rtsx_chip *chip, int select)
{ … }

#ifdef SUPPORT_SD_LOCK
static int sd_update_lock_status(struct rtsx_chip *chip)
{ … }
#endif

static int sd_wait_state_data_ready(struct rtsx_chip *chip, u8 state,
				    u8 data_ready, int polling_cnt)
{ … }

static int sd_change_bank_voltage(struct rtsx_chip *chip, u8 voltage)
{ … }

static int sd_voltage_switch(struct rtsx_chip *chip)
{ … }

static int sd_reset_dcm(struct rtsx_chip *chip, u8 tune_dir)
{ … }

static int sd_change_phase(struct rtsx_chip *chip, u8 sample_point, u8 tune_dir)
{ … }

static int sd_check_spec(struct rtsx_chip *chip, u8 bus_width)
{ … }

static int sd_query_switch_result(struct rtsx_chip *chip, u8 func_group,
				  u8 func_to_switch, u8 *buf, int buf_len)
{ … }

static int sd_check_switch_mode(struct rtsx_chip *chip, u8 mode, u8 func_group,
				u8 func_to_switch, u8 bus_width)
{ … }

static u8 downgrade_switch_mode(u8 func_group, u8 func_to_switch)
{ … }

static int sd_check_switch(struct rtsx_chip *chip,
			   u8 func_group, u8 func_to_switch, u8 bus_width)
{ … }

static int sd_switch_function(struct rtsx_chip *chip, u8 bus_width)
{ … }

static int sd_wait_data_idle(struct rtsx_chip *chip)
{ … }

static int sd_sdr_tuning_rx_cmd(struct rtsx_chip *chip, u8 sample_point)
{ … }

static int sd_ddr_tuning_rx_cmd(struct rtsx_chip *chip, u8 sample_point)
{ … }

static int mmc_ddr_tuning_rx_cmd(struct rtsx_chip *chip, u8 sample_point)
{ … }

static int sd_sdr_tuning_tx_cmd(struct rtsx_chip *chip, u8 sample_point)
{ … }

static int sd_ddr_tuning_tx_cmd(struct rtsx_chip *chip, u8 sample_point)
{ … }

static u8 sd_search_final_phase(struct rtsx_chip *chip, u32 phase_map,
				u8 tune_dir)
{ … }

static int sd_tuning_rx(struct rtsx_chip *chip)
{ … }

static int sd_ddr_pre_tuning_tx(struct rtsx_chip *chip)
{ … }

static int sd_tuning_tx(struct rtsx_chip *chip)
{ … }

static int sd_sdr_tuning(struct rtsx_chip *chip)
{ … }

static int sd_ddr_tuning(struct rtsx_chip *chip)
{ … }

static int mmc_ddr_tuning(struct rtsx_chip *chip)
{ … }

int sd_switch_clock(struct rtsx_chip *chip)
{ … }

static int sd_prepare_reset(struct rtsx_chip *chip)
{ … }

static int sd_pull_ctl_disable(struct rtsx_chip *chip)
{ … }

int sd_pull_ctl_enable(struct rtsx_chip *chip)
{ … }

static int sd_init_power(struct rtsx_chip *chip)
{ … }

static int sd_dummy_clock(struct rtsx_chip *chip)
{ … }

static int sd_read_lba0(struct rtsx_chip *chip)
{ … }

static int sd_check_wp_state(struct rtsx_chip *chip)
{ … }

static int reset_sd(struct rtsx_chip *chip)
{ … }

static int mmc_test_switch_bus(struct rtsx_chip *chip, u8 width)
{ … }

static int mmc_switch_timing_bus(struct rtsx_chip *chip, bool switch_ddr)
{ … }

static int reset_mmc(struct rtsx_chip *chip)
{ … }

int reset_sd_card(struct rtsx_chip *chip)
{ … }

static int reset_mmc_only(struct rtsx_chip *chip)
{ … }

#define WAIT_DATA_READY_RTY_CNT …

static int wait_data_buf_ready(struct rtsx_chip *chip)
{ … }

void sd_stop_seq_mode(struct rtsx_chip *chip)
{ … }

static inline int sd_auto_tune_clock(struct rtsx_chip *chip)
{ … }

int sd_rw(struct scsi_cmnd *srb, struct rtsx_chip *chip, u32 start_sector,
	  u16 sector_cnt)
{ … }

#ifdef SUPPORT_CPRM
int ext_sd_send_cmd_get_rsp(struct rtsx_chip *chip, u8 cmd_idx, u32 arg,
			    u8 rsp_type, u8 *rsp, int rsp_len,
			    bool special_check)
{ … }

int ext_sd_get_rsp(struct rtsx_chip *chip, int len, u8 *rsp, u8 rsp_type)
{ … }

int sd_pass_thru_mode(struct scsi_cmnd *srb, struct rtsx_chip *chip)
{ … }

static inline int get_rsp_type(struct scsi_cmnd *srb, u8 *rsp_type,
			       int *rsp_len)
{ … }

int sd_execute_no_data(struct scsi_cmnd *srb, struct rtsx_chip *chip)
{ … }

int sd_execute_read_data(struct scsi_cmnd *srb, struct rtsx_chip *chip)
{ … }

int sd_execute_write_data(struct scsi_cmnd *srb, struct rtsx_chip *chip)
{ … }

int sd_get_cmd_rsp(struct scsi_cmnd *srb, struct rtsx_chip *chip)
{ … }

int sd_hw_rst(struct scsi_cmnd *srb, struct rtsx_chip *chip)
{ … }
#endif

void sd_cleanup_work(struct rtsx_chip *chip)
{ … }

int sd_power_off_card3v3(struct rtsx_chip *chip)
{ … }

int release_sd_card(struct rtsx_chip *chip)
{ … }